/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.gluten.integration

import org.apache.spark.sql.{AnalysisException, SparkSession}

import java.io.File

trait TableCreator {
  def create(spark: SparkSession, dataPath: String): Unit
}

object TableCreator {
  def discoverSchema(): TableCreator = {
    DiscoverSchema
  }

  private object DiscoverSchema extends TableCreator {
    override def create(spark: SparkSession, dataPath: String): Unit = {
      val files = new File(dataPath).listFiles()
      files.foreach(file => {
        if (spark.catalog.tableExists(file.getName)) {
          println("Table exists: " + file.getName)
        } else {
          println("Creating catalog table: " + file.getName)
          spark.catalog.createTable(file.getName, file.getAbsolutePath, "parquet")
          try {
            spark.catalog.recoverPartitions(file.getName)
          } catch {
            case _: AnalysisException =>
          }
        }
      })
    }
  }
}
